what is WI-FI

Wi fi is like a hub or switch but it's wireless, you can share data or internet sharing from this devices, some says the data i and out from radio waves. Try to go to big mall, they usually provide the free Hot Spot for you WI FI, but still be carefull some of the providers may be contains virus or trojan

wi-fi is the radio waves to transmit data to computer.

WiFi is a wireless connection to the internet. Most coffee shops and some bars / pubs have free wi-fi connections for customers to use. It is an easy way to get internet access and is becoming more affordable all the time. If you want to read all about it you can check out this article at Wikipedia: http://en.wikipedia.org/wiki/WiFi

Wi-Fi... It is a wireless network in order to share and transfer data like photos and pics etc... Its just lik Bluetooth....

Wi-fi is Wireless Fidelity Service. Wi-fi is referred as IEEE 802.11b standard (specifications) for wireless LAN. Now it is commonly referred to all 802.11b applications.

Wi Fi is a wireless connection to the Internet via a modem.